Q45Single correct2 Marks7 Aug 2022Let X1,X2,…,Xn∼i.i.d. Uniform[−a,a]X_1, X_2, \ldots, X_n \sim \text{i.i.d. Uniform}[-a, a]X1,X2,…,Xn∼i.i.d. Uniform[−a,a], where aaa is unknown. An estimator a^\hat{a}a^ for aaa is given as: a^=3n(X12+X22+…+Xn2)\hat{a} = \frac{3}{n}(X_1^2 + X_2^2 + \ldots + X_n^2)a^=n3(X12+X22+…+Xn2) Is a^\hat{a}a^ an unbiased estimator of aaa?AYesBNo
